How to test:
92% automated test coverage. For manual testing, we'll want to check that we can create and edit a language without fun new errors. (Languages are used for the Support and Abuse forms and for classifying and filtering works.)

Create a language:
1. Log in as admin
2. Go to http://test.archiveofourown.org/languages because we don't have it linked anywhere, oops
3. Choose "Add a language"
4. Fill in the form
5. Press "Create Language"